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Article Dans Une Revue Journal of Computational Physics Année : 2014

Hybrid spectral-particle method for the turbulent transport of a passive scalar

Résumé

This paper describes a novel hybrid method, combining a spectral and a particle method, to simulate the turbulent transport of a passive scalar. The method is studied from the point of view of accuracy and numerical cost. It leads to a significative speed up over more conventional grid-based methods and allows to address challenging Schmidt numbers. In particular, theoretical predictions of universal scaling in forced homogeneous turbulence are recovered for a wide range of Schmidt numbers for large, intermediate and small scales of the scalar.
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Dates et versions

hal-00935487 , version 1 (30-01-2014)

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Jean-Baptiste Lagaert, Guillaume Balarac, Georges-Henri Cottet. Hybrid spectral-particle method for the turbulent transport of a passive scalar. Journal of Computational Physics, 2014, 260, pp.127-142. ⟨10.1016/j.jcp.2013.12.026⟩. ⟨hal-00935487⟩
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